Abstract
Two field experiments were performed at the Horticultural Research Farm of El-Bramoon (Dakahliya Governorate) during 1998 and 1999 seasons. This study aimed to study the effect of mineral nitrogen fertilizer levels, sources , biological fertilization and their interaction on chemical composition of sweet potato tuber roots. The main results could be summarized as follows: Application of Ca (NO3)2 fertilizer significantly increased reducing sugars contents, K, NO2- and NO3- contents in tuber roots as compared with (NH4)2 SO4 fertilizer. In addition, (NH4)2 SO4 fertilizer had significant increases on total carotene content in tuber roots. Inoculation of plants with biofertilizer (nitrobien) led to increase reducing sugars and total carotene contents in tuber roots and beside that significantly reduced NO3-, and NO2- concentrations in tuber roots comparing with the uninoculated ones. Raising nitrogen fertilizer levels from 0 to 80 kg N/fed resulted in a significant increase in total soluble and reducing sugars, total carotene as well as N, P, K, NO3- and NO2- concentrations in both seasons. The positive interaction between N-sources and biofertilizer have been observed, application of Ca (NO3)2 fertilizer with biofertilizer gave the highest values of total soluble sugars NO3- and NO2- concentrations in tuber roots comparing with (NH4)2 SO4 with biofertilizer. Application of (NH4)2 SO4 fertilizer with biofertilizer significantly increased total carotene content. The interaction between nitrogen fertilizer rates and biofertilizer had significant effect on reducing sugars, K, NO3- and NO2- concentration. Thus, it can be recommended that adding (NH4)2 SO4 at 60 kg N/fed with biofertilizer (nitrobien) was the best treatment under the condition of this study for reducing mineral nitrogen fertilization, soil pollution and improving quality of tuber roots.
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Claims 16
Claim · model-written summary
Ca(NO3)2 fertilizer significantly increased reducing sugar content of sweet potato tuber roots compared with (NH4)2SO4 fertilizer.
- Taxon
- sweet potato
_Flower.jpg?width=60)
Ipomoea batatase0 - Organ / stage
- tuber rootse2
- Treatment
- Application of Ca (NO3)2 fertilizere2
- Outcome
- reducing sugars contentse2
- Direction
- increasede2
- Comparator
- (NH4)2 SO4 fertilizere2
- Setting
- Horticultural Research Farm of El-Bramoon (Dakahliya Governorate)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“This study aimed to study the effect of mineral nitrogen fertilizer levels, sources , biological fertilization and their interaction on chemical composition of sweet potato tuber roots”
e1“Two field experiments were performed at the Horticultural Research Farm of El-Bramoon (Dakahliya Governorate) during 1998 and 1999 seasons”
e2“Application of Ca (NO3)2 fertilizer significantly increased reducing sugars contents, K, NO2- and NO3- contents in tuber roots as compared with (NH4)2 SO4 fertilizer”
Claim · model-written summary
Ca(NO3)2 fertilizer significantly increased K, NO2- and NO3- contents of sweet potato tuber roots compared with (NH4)2SO4 fertilizer.
- Taxon
- sweet potatoIpomoea batatase0
- Organ / stage
- tuber rootse2
- Treatment
- Application of Ca (NO3)2 fertilizere2
- Outcome
- K, NO2- and NO3- contentse2
- Direction
- increasede2
- Comparator
- (NH4)2 SO4 fertilizere2
- Setting
- Horticultural Research Farm of El-Bramoon (Dakahliya Governorate)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study aimed to study the effect of mineral nitrogen fertilizer levels, sources , biological fertilization and their interaction on chemical composition of sweet potato tuber roots”
e1“Two field experiments were performed at the Horticultural Research Farm of El-Bramoon (Dakahliya Governorate) during 1998 and 1999 seasons”
e2“Application of Ca (NO3)2 fertilizer significantly increased reducing sugars contents, K, NO2- and NO3- contents in tuber roots as compared with (NH4)2 SO4 fertilizer”
Claim · model-written summary
(NH4)2SO4 fertilizer significantly increased total carotene content of sweet potato tuber roots.
- Taxon
- sweet potatoIpomoea batatase0
- Organ / stage
- tuber rootse3
- Treatment
- (NH4)2 SO4 fertilizere3
- Outcome
- total carotene contente3
- Direction
- increasese3
- Setting
- Horticultural Research Farm of El-Bramoon (Dakahliya Governorate)e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study aimed to study the effect of mineral nitrogen fertilizer levels, sources , biological fertilization and their interaction on chemical composition of sweet potato tuber roots”
e1“Two field experiments were performed at the Horticultural Research Farm of El-Bramoon (Dakahliya Governorate) during 1998 and 1999 seasons”
e3“In addition, (NH4)2 SO4 fertilizer had significant increases on total carotene content in tuber roots”
Claim · model-written summary
Biofertilizer (nitrobien) inoculation increased reducing sugars and total carotene contents of sweet potato tuber roots compared with uninoculated plants.
- Taxon
- sweet potatoIpomoea batatase0
- Organ / stage
- tuber rootse4
- Treatment
- Inoculation of plants with biofertilizer (nitrobien)e4
- Outcome
- reducing sugars and total carotene contentse4
- Direction
- increasee4
- Comparator
- uninoculated onese4
- Setting
- Horticultural Research Farm of El-Bramoon (Dakahliya Governorate)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study aimed to study the effect of mineral nitrogen fertilizer levels, sources , biological fertilization and their interaction on chemical composition of sweet potato tuber roots”
e1“Two field experiments were performed at the Horticultural Research Farm of El-Bramoon (Dakahliya Governorate) during 1998 and 1999 seasons”
e4“Inoculation of plants with biofertilizer (nitrobien) led to increase reducing sugars and total carotene contents in tuber roots and beside that significantly reduced NO3-, and NO2- concentrations in tuber roots comparing with the uninoculated ones”
Claim · model-written summary
Biofertilizer (nitrobien) inoculation significantly reduced NO3- and NO2- concentrations in sweet potato tuber roots compared with uninoculated plants.
- Taxon
- sweet potatoIpomoea batatase0
- Organ / stage
- tuber rootse4
- Treatment
- Inoculation of plants with biofertilizer (nitrobien)e4
- Outcome
- NO3-, and NO2- concentrationse4
- Direction
- reducede4
- Comparator
- uninoculated onese4
- Setting
- Horticultural Research Farm of El-Bramoon (Dakahliya Governorate)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study aimed to study the effect of mineral nitrogen fertilizer levels, sources , biological fertilization and their interaction on chemical composition of sweet potato tuber roots”
e1“Two field experiments were performed at the Horticultural Research Farm of El-Bramoon (Dakahliya Governorate) during 1998 and 1999 seasons”
e4“Inoculation of plants with biofertilizer (nitrobien) led to increase reducing sugars and total carotene contents in tuber roots and beside that significantly reduced NO3-, and NO2- concentrations in tuber roots comparing with the uninoculated ones”
Claim · model-written summary
Raising N fertilizer from 0 to 80 kg N/fed significantly increased total soluble and reducing sugars of sweet potato tuber roots in both seasons.
- Taxon
- sweet potatoIpomoea batatase0
- Organ / stage
- tuber rootse0
- Treatment
- Raising nitrogen fertilizer levels from 0 to 80 kg N/fede5
- Outcome
- total soluble and reducing sugarse5
- Direction
- increasee5
- Qualifier
- in both seasonse5
- Setting
- Horticultural Research Farm of El-Bramoon (Dakahliya Governorate)e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study aimed to study the effect of mineral nitrogen fertilizer levels, sources , biological fertilization and their interaction on chemical composition of sweet potato tuber roots”
e1“Two field experiments were performed at the Horticultural Research Farm of El-Bramoon (Dakahliya Governorate) during 1998 and 1999 seasons”
e5“Raising nitrogen fertilizer levels from 0 to 80 kg N/fed resulted in a significant increase in total soluble and reducing sugars, total carotene as well as N, P, K, NO3- and NO2- concentrations in both seasons”
Claim · model-written summary
Raising N fertilizer from 0 to 80 kg N/fed significantly increased total carotene of sweet potato tuber roots in both seasons.
- Taxon
- sweet potatoIpomoea batatase0
- Organ / stage
- tuber rootse0
- Treatment
- Raising nitrogen fertilizer levels from 0 to 80 kg N/fede5
- Outcome
- total carotenee5
- Direction
- increasee5
- Qualifier
- in both seasonse5
- Setting
- Horticultural Research Farm of El-Bramoon (Dakahliya Governorate)e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study aimed to study the effect of mineral nitrogen fertilizer levels, sources , biological fertilization and their interaction on chemical composition of sweet potato tuber roots”
e1“Two field experiments were performed at the Horticultural Research Farm of El-Bramoon (Dakahliya Governorate) during 1998 and 1999 seasons”
e5“Raising nitrogen fertilizer levels from 0 to 80 kg N/fed resulted in a significant increase in total soluble and reducing sugars, total carotene as well as N, P, K, NO3- and NO2- concentrations in both seasons”
Claim · model-written summary
Raising N fertilizer from 0 to 80 kg N/fed significantly increased N, P and K concentrations of sweet potato tuber roots in both seasons.
- Taxon
- sweet potatoIpomoea batatase0
- Organ / stage
- tuber rootse0
- Treatment
- Raising nitrogen fertilizer levels from 0 to 80 kg N/fede5
- Outcome
- N, P, Ke5
- Direction
- increasee5
- Qualifier
- in both seasonse5
- Setting
- Horticultural Research Farm of El-Bramoon (Dakahliya Governorate)e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study aimed to study the effect of mineral nitrogen fertilizer levels, sources , biological fertilization and their interaction on chemical composition of sweet potato tuber roots”
e1“Two field experiments were performed at the Horticultural Research Farm of El-Bramoon (Dakahliya Governorate) during 1998 and 1999 seasons”
e5“Raising nitrogen fertilizer levels from 0 to 80 kg N/fed resulted in a significant increase in total soluble and reducing sugars, total carotene as well as N, P, K, NO3- and NO2- concentrations in both seasons”
Claim · model-written summary
Raising N fertilizer from 0 to 80 kg N/fed significantly increased NO3- and NO2- concentrations of sweet potato tuber roots in both seasons.
- Taxon
- sweet potatoIpomoea batatase0
- Organ / stage
- tuber rootse0
- Treatment
- Raising nitrogen fertilizer levels from 0 to 80 kg N/fede5
- Outcome
- NO3- and NO2- concentrationse5
- Direction
- increasee5
- Qualifier
- in both seasonse5
- Setting
- Horticultural Research Farm of El-Bramoon (Dakahliya Governorate)e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study aimed to study the effect of mineral nitrogen fertilizer levels, sources , biological fertilization and their interaction on chemical composition of sweet potato tuber roots”
e1“Two field experiments were performed at the Horticultural Research Farm of El-Bramoon (Dakahliya Governorate) during 1998 and 1999 seasons”
e5“Raising nitrogen fertilizer levels from 0 to 80 kg N/fed resulted in a significant increase in total soluble and reducing sugars, total carotene as well as N, P, K, NO3- and NO2- concentrations in both seasons”
Claim · model-written summary
There was a positive interaction between N sources and biofertilizer on sweet potato tuber root composition.
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- N-sources and biofertilizere6
- Outcome
- positive interaction between N-sources and biofertilizere6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study aimed to study the effect of mineral nitrogen fertilizer levels, sources , biological fertilization and their interaction on chemical composition of sweet potato tuber roots”
e6“The positive interaction between N-sources and biofertilizer have been observed”
Claim · model-written summary
Ca(NO3)2 fertilizer with biofertilizer gave the highest total soluble sugars in sweet potato tuber roots compared with (NH4)2SO4 with biofertilizer.
- Taxon
- sweet potatoIpomoea batatase0
- Organ / stage
- tuber rootse7
- Treatment
- application of Ca (NO3)2 fertilizer with biofertilizere7
- Outcome
- total soluble sugarse7
- Direction
- higheste7
- Comparator
- (NH4)2 SO4 with biofertilizere7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study aimed to study the effect of mineral nitrogen fertilizer levels, sources , biological fertilization and their interaction on chemical composition of sweet potato tuber roots”
e7“application of Ca (NO3)2 fertilizer with biofertilizer gave the highest values of total soluble sugars NO3- and NO2- concentrations in tuber roots comparing with (NH4)2 SO4 with biofertilizer”
Claim · model-written summary
Ca(NO3)2 fertilizer with biofertilizer gave the highest NO3- and NO2- concentrations in sweet potato tuber roots compared with (NH4)2SO4 with biofertilizer.
- Taxon
- sweet potatoIpomoea batatase0
- Organ / stage
- tuber rootse7
- Treatment
- application of Ca (NO3)2 fertilizer with biofertilizere7
- Outcome
- NO3- and NO2- concentrationse7
- Direction
- higheste7
- Comparator
- (NH4)2 SO4 with biofertilizere7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study aimed to study the effect of mineral nitrogen fertilizer levels, sources , biological fertilization and their interaction on chemical composition of sweet potato tuber roots”
e7“application of Ca (NO3)2 fertilizer with biofertilizer gave the highest values of total soluble sugars NO3- and NO2- concentrations in tuber roots comparing with (NH4)2 SO4 with biofertilizer”
Claim · model-written summary
(NH4)2SO4 fertilizer with biofertilizer significantly increased total carotene content of sweet potato tuber roots.
- Taxon
- sweet potatoIpomoea batatase0
- Organ / stage
- tuber rootse0
- Treatment
- Application of (NH4)2 SO4 fertilizer with biofertilizere7
- Outcome
- total carotene contente7
- Direction
- increasede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study aimed to study the effect of mineral nitrogen fertilizer levels, sources , biological fertilization and their interaction on chemical composition of sweet potato tuber roots”
e7“Application of (NH4)2 SO4 fertilizer with biofertilizer significantly increased total carotene content”
Claim · model-written summary
The interaction between N rate and biofertilizer had a significant effect on reducing sugars and K of sweet potato tuber roots.
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- interaction between nitrogen fertilizer rates and biofertilizere7
- Outcome
- reducing sugars, Ke7
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study aimed to study the effect of mineral nitrogen fertilizer levels, sources , biological fertilization and their interaction on chemical composition of sweet potato tuber roots”
e7“The interaction between nitrogen fertilizer rates and biofertilizer had significant effect on reducing sugars, K, NO3- and NO2- concentration”
Claim · model-written summary
The interaction between N rate and biofertilizer had a significant effect on NO3- and NO2- concentrations of sweet potato tuber roots.
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- interaction between nitrogen fertilizer rates and biofertilizere7
- Outcome
- NO3- and NO2- concentratione7
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study aimed to study the effect of mineral nitrogen fertilizer levels, sources , biological fertilization and their interaction on chemical composition of sweet potato tuber roots”
e7“The interaction between nitrogen fertilizer rates and biofertilizer had significant effect on reducing sugars, K, NO3- and NO2- concentration”
Claim · model-written summary
The authors recommend adding (NH4)2SO4 at 60 kg N/fed with biofertilizer as the best treatment for reducing mineral N fertilization and improving tuber quality.
- Taxon
- sweet potatoIpomoea batatase0
- Outcome
- adding (NH4)2 SO4 at 60 kg N/fed with biofertilizer (nitrobien)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study aimed to study the effect of mineral nitrogen fertilizer levels, sources , biological fertilization and their interaction on chemical composition of sweet potato tuber roots”
e1“it can be recommended that adding (NH4)2 SO4 at 60 kg N/fed with biofertilizer (nitrobien) was the best treatment under the condition of this study”
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See all 33 papers →8 of 10 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.